Refined gps documentation.

[davidv1992]

This shows how to use symlinks to allow ntpd-rs to run with reduced permissions even when configured to connect to gpsd, which is an ok workaround for #1913

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.37%. Comparing base (30d6185) to head (47652af).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1926      +/-   ##
==========================================
- Coverage   83.44%   83.37%   -0.08%     
==========================================
  Files          71       71              
  Lines       19237    19237              
==========================================
- Hits        16053    16038      -15     
- Misses       3184     3199      +15     

Flag	Coverage Δ
fuzz-cookie_parsing_sound	0.45% <ø> (ø)
fuzz-duration_from_float	0.29% <ø> (ø)
fuzz-encrypted_client_parsing	7.48% <ø> (-0.69%)	⬇️
fuzz-encrypted_server_parsing	10.58% <ø> (-0.28%)	⬇️
fuzz-ipfilter	2.75% <ø> (ø)
fuzz-key_exchange_request_parsing	2.28% <ø> (-1.25%)	⬇️
fuzz-key_exchange_response_parsing	2.67% <ø> (-1.51%)	⬇️
fuzz-packet_keyset	4.91% <ø> (-0.55%)	⬇️
fuzz-packet_parsing_sound	5.53% <ø> (-3.24%)	⬇️
fuzz-record_encode_decode	3.17% <ø> (-0.06%)	⬇️
test-aarch64-apple-darwin	83.10% <ø> (ø)
test-x86_64-unknown-linux-gnu	83.01% <ø> (ø)
test-x86_64-unknown-linux-musl	83.01% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.